Color operators and functions.
Definition in file utils/color/functions.hpp.
#include <iosfwd>
#include <map>
#include <string>
#include <vector>
Go to the source code of this file.
Namespaces | |
genesis | |
Container namespace for all symbols of genesis in order to keep them separate when used as a library. | |
genesis::utils | |
Functions | |
Color | color_from_bytes (unsigned char r, unsigned char g, unsigned char b, unsigned char a=255) |
Create a Color given three or four values in the range [ 0, 255 ] for each of the components red, green and blue, and optionally alpha. More... | |
Color | color_from_hex (std::string const &hex_color, std::string const &prefix="#") |
Create a Color given a hex color string in the format "#003366[ff]". More... | |
std::string | color_to_hex (Color const &c, std::string const &prefix="#", bool uppercase=false, bool with_alpha=false) |
Return a hex string representation of a Color in the format "#003366[ff]". More... | |
Color | gradient (std::map< double, Color > const &ranges, double value) |
Returns a Color that is created using a color gradient. More... | |
Color | heat_gradient (double percentage) |
Return a Color that represents a heat gradient for a given percentage value. More... | |
Color | interpolate (Color const &color1, Color const &color2, double fraction) |
Linearily interpolate between two Colors. More... | |
std::ostream & | operator<< (std::ostream &os, Color const &h) |
Write a textual representation of the Color the a stream, in the format "(r, g, b, a)". More... | |
Color | resolve_color_string (std::string const &color_str) |
Resolve a string representing a color. More... | |